Dy2Ti2O7 — Properties & Data | MatWorld

Dy2Ti2O7

ceramic

· JVASP-59253· Dy2Ti2O7

Dy2Ti2O7 is a dysprosium titanate ceramic belonging to the pyrochlore family of oxides, characterized by a complex crystal structure that imparts unusual thermal and structural properties. This material is primarily investigated in research and advanced applications requiring thermal stability at extreme temperatures, particularly as a thermal barrier coating (TBC) material and in nuclear fuel applications where its resistance to radiation damage and low thermal conductivity are advantageous. Compared to conventional alumina-based ceramics, pyrochlore titanates like Dy2Ti2O7 offer superior phase stability and lower thermal conductivity, making them attractive candidates for next-generation aerospace and nuclear engineering systems, though most applications remain in development or limited-scale deployment.

thermal barrier coatings (aerospace)advanced nuclear fuel matricesradiation-resistant ceramicshigh-temperature structural applicationsresearch-phase materials

Compliance & Regulations

?Conflict Free?RoHS?REACH?TSCA?Prop 65

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	0.2449	lb/in³	DFT · OptB88vdW

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Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	2.747	eV	DFT · OptB88vdW
↳	3.115	eV	DFT · TBmBJ
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	6.120	-	DFT · OptB88vdW
↳	5.138	-	DFT · TBmBJ
Electron Effective Mass(m*e)	1.380	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	1.150	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00118	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00217	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-357.5	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	361.3	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	3.350	%	DFT · TBmBJ

N entriesMultiple entries per property — large groups are collapsed; click a summary row to expand. Use filters above to narrow by form, heat treatment, basis, or test environment.

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Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-3.588	eV/atom	DFT · OptB88vdW

Verified Unverified Low confidence (<80%) Link to source

Reference data from cited sources. Not verified or certified by MatWorld Inc. Verify against the source before use in design. Terms: engineering data

Regulatory Screening

Environmental

RoHS, REACH, and Prop 65 statuses are validated against official substance lists (ECHA SVHC Candidate List, OEHHA Prop 65, RoHS Annex II). Other regulations are estimated from composition and material classification. All screening is a starting point for due diligence — always verify with your supplier before making compliance decisions.

Dy2Ti2O7

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental